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Thread: Iphone 3gs signal drop/no SIM
02-11-2012, 01:43 PM #1Iphone 3gs signal drop/no SIM
Hey, I'm trouble with an Iphone 3gs 5.0.1 on Ipad 6.15.00, The iPhone will not search for my sim card unless I do the airplane mode on/off, any idea whats causing it? unstable bb? I upgraded from 4.1 via snowbreeze
02-11-2012, 02:21 PM #2
Just curious here... If you switch off 3G, data & location services then reboot the phone, do you now find that it becomes stable until you switch on location services again?
02-11-2012, 02:31 PM #3
going to try that now.
Just tried inserting my sim after you suggesting turning off everything, I still get no sim
Airplane mode on/off, managed to pick up T-mobile with only 1 bar inside and then it started doing no service
Is anyone there?????????????
Last edited by MiaField; 02-11-2012 at 02:57 PM.
02-11-2012, 03:00 PM #4
When you upgraded, did you preserve the baseband or re-install it?
02-11-2012, 04:23 PM #5
Snowbreeze preserved the Baseband. IOTWS I did not flash the Ipad BB again when Upgrading to 5.0.1
02-11-2012, 11:11 PM #6
I had the same problem with 5.0.1 on 3GS 05.13.04, it keep searching for network signal for a long period of time and sometime found network some not. Downgrading back to 4.3.3 to make it works. May be the 5.0.1 & ultrasn0w not working well together.
02-12-2012, 02:01 PM #7
I flashed the Baseband again, I'm guessing its a hardware issue now but anyways the iPhone doesn't lose signal after it picks up after doing the Airplane mode toggle.